Obscuration in luminous AGNs

Details Obscuration in luminous AGNs Obscuration in luminous AGNs

Mar 2009

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2009sptz.prop50388p&link_type=abstract

Spitzer Proposal ID #50388

Computer Science

Scientific paper

Spitzer has unveiled a population of obscured QSOs whose fraction among all mid-infrared selected AGNs is higher than the fraction of obscured AGNs found at optical and X-ray wavelengths. Multi-wavelength observations of these mid-infrared selected obscured QSOs indicate that a sizable fraction of them are not obscured by the putative torus, but by cold dust outside the torus, and that the torus opening angle increases at higher luminosities, supporting the receding torus scenario. We propose to study the MIR spectra of a complete sample of obscured QSOs at 1.31 dex in luminosity.

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